I'm pretty confident the why works now. When it first began, somebody said to me: "Will this work in big business?" I said, "I don't know. Let's try." Somebody said will this work in entrepreneurs, relationships or government and military. I said, "I don't know. Let's try." I kept applying the scientific method. I had a theory. I kept applying that theory, looking for opportunities to fail and it kept working.

Great leaders must have two things: a vision of the world that does not yet exist and the ability to communicate that vision clearly.

Leadership is a way of thinking, a way of acting and, most importantly, a way of communicating.

A leader's job is not to do the work for others; it's to help others figure out how to do it themselves, to get things done and to succeed beyond what they thought possible.

Systems and processes are essential to keep the crusade going, but they should not replace the crusade.

If you talk about what you believe, you will attract those who believe what you believe.

The strong bond of friendship is not always a balanced equation; friendship is not always about giving and taking in equal shares. Instead, friendship is grounded in a feeling that you know exactly who will be there for you when you need something, no matter what or when.